Half to harris weinstock



(Model.)

- D. LUBIN.

ENVELOPE.

No. 272,725. k'mmm-,ed Feb.2o,18s.

wA Pneus. mummy-apn, wmingfm dc.

UNITED STATES PATENT OFFICE.

DAVID LUBIN, OF SACRAMENTO CITY, CALIFORNIA, ASSIGNOR OF ONE- HALF TO HARRIS WEINSTOCK, OF SAME PLACE.

ENVELOPE.

SPECIFICATION *forming part of Letters Patent N o. 272,725, dated February 20, 1883.

Application led June 22, 1882. (Model.)

To all whom 'it may concern.-

Be it known that I, DAVID LUBIN, ot' Sacramento City, in the county of Sacramento, and

in the State of California, have invented cer- This invention has for its objects to provide.

certain improved means for sealing and securing envelopes, and it is specially vdesigned to be used in connection with the improved envelope for which Letters Patent No. 258,861 were granted to me January 31, 1882, although it may be applied to other envelopes without changing the spirit ot' my invention.

The ahove-mentioned objects I attain by the means illustrated in the accompanying drawings, in which- Figure 1 is a plan view of the hack of my improved envelope. Fig. 2 is a longitudinal sectional view thereof, taken on the line :l: wot' Fig. 1. Fig. 3 is a transverse sectional view of the envelope having my fastening device applied theretdsame being taken on the line y y of Fig. l; Fig. 4, a detached perspective view ot' my connecting-plate; and Figs. 5, 6, 7, and 8 represent, respectively, moditications in the form or contignration ot' my improved fastening or connecting plate.

The letter A indicates the envelope, which atits inclosng tiap is provided with an extension, B, adapted to be inserted in a pocket, E, in the lower portion ofthe back ofthe envelope, as shown in the drawings, in order to secure the Hap.

The letterFindicates a metallic plate, sheet, or bar provided with pins or projections G, the said plate heilig adapted to be inserted between the Hap which'is cut t'roin the back of the envelope and the re-enforce piece, which is applied to the inner side of said back, and to haveits prongs inserted, the one through the re-entorce piece, the contents of the envelope, and the face thereof', and tinally bent or clinched, the other through the aps E and B,

which is also bent or clinched, as seen in Fig. 2, whereby the several parts are securely united.

It will be seen that an envelope having the mail-matter inclosed and secured as described cannot be readily tampered with orfraudulently opened, as the metallic plate, when once removed, or the parts ot' the envelope, when once separated, cannot be replaced or rearranged without showing or indicating the fraudulent opening or manipulation ot' the envelope.

The fastening-plate may be made of any approvedform--such as a disk with points, a bar, or otherwise, as seen in Figs. 5, 6, 7, and 8 ofthe drawings-and may be employed not only with the particular class of envelopesl mentioned, but with all other classes ot' envelopes in which the flap overlaps the back to such an extent as to permit the application of the fastening. The fastening, instead ot' being applied so as to pass through the iiap and front ot' the envelope, may be formed to pass through the tlap and back, being interposed between the same, if it may be desired.

The fastening-plate, instead of being made of metal, may be constructed ot' compressed paper, pasteboard, or any other suitable material, in which instances it is applied in the manner above indicated, mucilage or other suitableadhesive substance being employed to retain the prongs when bent or clinched.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

An improved fastening for envelopes, consisting ot' a plate constructed with oppositelyextending prongs, as described, and placed between the back and the Hap or taps ot' envelope and secured, substantially in the manner specitied.

In testimony WhereofI aftx my signature, in presence of two witnesses, this 14th day of June, 1882.

DAVID LUBIN.

Witnesses E. FRANKLIN, W. MALoNE. 

